The present study aimed to uncover the relationship between the habits of mind, "communicating with clarity and accuracy, striving for accuracy, learning continuously, sense of humor, listen with understanding and empathy, creativity, imagining and innovating, thinking interdependently and benefit from experience" to achievement motivation for a sample of assistant lecturers in university and to identify the contribution degree of the habits of mind in predicting achievement motivation with the study's sample of (200) members of assistant lecturers at Mansoura University, (100) males and (100) females with an average age of (26.18) and a standard deviation of (± 2.4). The measure of the habits of mind was used (prepared by the researcher), and the measure of achievement motivation (prepared by the researcher). The results of the study showed that there is a statistically significant relationship between the habits of mind, "communicating with clarity and accuracy, striving for accuracy, learning continuously, sense of humor, listen with understanding and empathy, creativity, imagining and innovating visualization and innovation, thinking interdependently and benefit from experience" and the achievement motivation. The results of the multiple regression analysis showed that creativity, imagining and innovating, thinking interdependently, benefit from accuracy and striving for accuracy as one of the habit of mind having statistically significant contribution in predicting achievement motivation for assistant lecturers in universit